Oil pump



C. W. HOWE ET L OIL PUMP Patented Aug. 5, 1.92241a UNITE-D STATES1,583,552 PATNT OFFICE.

CHARLES W. HOWE AND JESSE J. ROBERTSON, OF .ARDLIOREEl OKLAHOMA.

.OIL PUMP,-

Applicatl'on led June 2l., 1923. Serial No. 646,965.

To all whom t may' concern.'

Be it known that we, CHARLES lV. Hown and JESSE J. ROBERTSON, citizensof the United States, residing at Ardmore, in the count-y of Carter andState oflOklahoma1 have invented certain new and useful lmprovements inOil Pumps; and we do de- Clare the following to be a full, clear, andexact description of the invention, such as will enable others Skilledin the art to which it appertains to make and use the same.

Our invention relates to improvements in oil pumps` of the typeemploying a stationary working barrel having la standing valve at itslower end, and a reciprocating plunger in said barrel provided with atraveling' valve. Pumps of this character are provided with plungerpackings for tight sliding contact with the working barrel and withother packings at the lower end of the barrel which prevent leakage cfoil around the mounting means for the standing valve. These packingsbecome so worn that the pump partsmust be entirely removed from the wellat frequent intervals in order that said packings may be adjusted or re#newed. It is; the object of our invention however to provide novel meanswhereby both packings may be, effectively tightened7 simply by rotatingthe4 pump rod. We are aware that pumps have heretofore been providedwhich will permit of packing adjustments by rotating' certain parts, butour invention aims to provide an improved con struction which will besimple and ineX- pensive, yet highly eflicient and reliable,

With the foregoing inview, the invent-ion resides in the novel subjectmattei' hereinafter described and claimed, the description beingsupplemented by the accompanying drawing Figure 1 is an elevation of aportion of the pump within a well casing, the working barrel being shownin vertical section.

Figure 2 is a vertical sectional view showing the pump plunger engagedwith the standing valvefor effecting a packing adjustment, in the mannerhereinafter' described.

Figure 3 is a view similar to a portion of Fig. 1 but showing theplunger and the standing valve engaged with each other as indicated inFig.4

Figure l is a horizontal section on line 4-4 of Fig. 3.

Figure 5 is a horizontal sectional view as indicated by line 5-5 of Fig.2.

ln the drawings above briefly described, the numeral 1 designates theworking barrel of the pump which may be mounted in the usual well casing2 in any desired manner. A cup-shaped coupling 3 is threaded at 4l uponthe lower end cf the working barrel 1 and is provided with a bottom 5having a flat sided central ope-ning 6. VThis opening receives theflat-sided lower end 7 of a short'vertical tube 8 which rises from thebottom 5 into the barrel 1 and carries the usual cage 9 for a standingvalve 10, said cage being formed with the common circumferentially spacdvertical side bars 10. Adjacent it lower end, the tube, 8 is providedwith an outstanding flange 11 which rests upon the bottom 5 of lthecoupling 3, for the purpose of clamping a plurality of packing rings 12against the lower end of the barrel 1, preventing leakage at the lowerend of the barrel lt will be seen that since the tubi! 8 is nonrotatablewith respect to the coupling 3, that rotation of said tube in the properdirection, will vcause the coupling to thread upwardly upon the barrel1, thus compressing the packing rings 12 to prevent further leakage, ifit is discovered that some leakage has been taking place. llvle providenovel means for so rotating the 4tube 8, as described below.

The pump plunger includes un uppertube 13 carrying a traveling valve 111whose cage is adapted for connection with the usual pump rod 15. Nearits upper end, the tube 13 is provided with a downwardly facing shoulder16 adapted to contact with the upper end of a compressible packing whichsurrounds said tube, this packing being by preference formed of asuitable grade of rubber. The tube 13 extends below the packing 17 andis threaded in the upper end of a lower tube 18 and it will be seen thatif this tube 18 is held against rotation and the rod 15 is rotated toturn the upper tube 13, the latter will thread downwardly into the tube18, thus compressing the packing 17 between the shoulder 16 and saidtube 18 and causing radial expansion thereof, so as to cause tightcontact with the wall of the working barrel. For holding the tube 18 inthis manner, we provide its lower end with a plurality ofcircumferentially spaced Straight fingers 19 which are adapted forreception between the vertical side bars 11 of the cage 9, when the rod15 is lowered packing 17. Also, this rotation ot the rod, if the packingrings 19. are loose, will cause the coupling 3 to be threaded upwardlyonto` the lower end ot' the working barrel 1, thereby snugly tighteningsaid packing rings to prevent leakage around them. rlhus, it will beseen that both the plunger packing and the packing at the lower end ofthe working barrel may be effectively tightened without the necessityo't' removing any parts ot the pump from the well.

In order to prevent any returning of the tubes 13 and 18 to theirinitial positions,

after they have been relatively adjusted, we'

prefer to provide some suitable means, such as the spring-pressed pin 2Ocarried by the tube 18 and co-operable with a groove 21 in the tube 13,one side ot' the pin and one wall ot' the groove being appropriatelybeveled so as to permit relative turning of the tubes in one directionwhile preventing it in the other direction.

As excellent results may be obtained from the details disclosed, thesedetails are preterably followed. It is to be understood however thatwithin the scope ot the invention as claimed, numerous minor changes maybe made.

llVe claim:

1. An oil pump element comprising a cuplike coupling adapted to bethreaded on the lower end of a working barrel, and a standing valvecarrying tube rising rigidly from and non-rotatable with respect to thebottom ot' said coupling, said coupling being adapted to contain packingrings to be clamped thereby against thelower end of the working barrel,rotation o said tube serving to thread said coupling tightly upon theworking barrel to compress said packing rings.

2. An oil pump element comprising a cuplike coupling adapted to bethreaded onto the lower end ot a working barrel, said coupling having aflat-sided opening in its bottom, and a standing valve carrying tuberising from said bottom and having a flatsided lower end received insaid opening, whereby rotation of the tube will rotate the coupling, thelower end of said tube having an outstanding flange for clamping packingrings against thel working barrel when said coupling is rotated andthreaded 'further onto the barrel.

3. 1n a device of the class described, a working barrel, a cup-likecoupling threaded on the lower end of said barrel, packing disposedbetween said barrel and coupling, a standing valve rising rigidly fromand nonrotatable with respect to said coupling, an upper tube disposedin said barrel and provided with a shoulder, a lower tube threaded ontothe lower end of said upper tube and provided with a shoulder, packingdisposed between said shoulders, and coupling means carried by saidlower tube and engageable with said standing valve Vt'or rotating thelatter with said cup-like coupling to initially compress the first namedpacking and to successively compress the Vsecond named packing.

1n testimony whereof we have hereunto aliixed our signatures.

CHARLES W. HOWE. JESSE J. ROBERTSON.

